1/* Copyright libuv project contributors. All rights reserved. 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to 5 * deal in the Software without restriction, including without limitation the 6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 7 * sell copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 19 * IN THE SOFTWARE. 20 */ 21 22#include "uv.h" 23#include "internal.h" 24 25#include <stdint.h> 26#include <stdlib.h> 27#include <string.h> 28 29#include <sys/types.h> 30 31#include <sys/time.h> 32#include <unistd.h> 33 34#include <procinfo.h> 35 36#include <ctype.h> 37 38extern char* original_exepath; 39extern uv_mutex_t process_title_mutex; 40extern uv_once_t process_title_mutex_once; 41extern void init_process_title_mutex_once(void); 42 43uint64_t uv__hrtime(uv_clocktype_t type) { 44 uint64_t G = 1000000000; 45 timebasestruct_t t; 46 read_wall_time(&t, TIMEBASE_SZ); 47 time_base_to_time(&t, TIMEBASE_SZ); 48 return (uint64_t) t.tb_high * G + t.tb_low; 49} 50 51 52/* 53 * We could use a static buffer for the path manipulations that we need outside 54 * of the function, but this function could be called by multiple consumers and 55 * we don't want to potentially create a race condition in the use of snprintf. 56 * There is no direct way of getting the exe path in AIX - either through /procfs 57 * or through some libc APIs. The below approach is to parse the argv[0]'s pattern 58 * and use it in conjunction with PATH environment variable to craft one. 59 */ 60int uv_exepath(char* buffer, size_t* size) { 61 int res; 62 char args[UV__PATH_MAX]; 63 size_t cached_len; 64 struct procsinfo pi; 65 66 if (buffer == NULL || size == NULL || *size == 0) 67 return UV_EINVAL; 68 69 uv_once(&process_title_mutex_once, init_process_title_mutex_once); 70 uv_mutex_lock(&process_title_mutex); 71 if (original_exepath != NULL) { 72 cached_len = strlen(original_exepath); 73 *size -= 1; 74 if (*size > cached_len) 75 *size = cached_len; 76 memcpy(buffer, original_exepath, *size); 77 buffer[*size] = '\0'; 78 uv_mutex_unlock(&process_title_mutex); 79 return 0; 80 } 81 uv_mutex_unlock(&process_title_mutex); 82 pi.pi_pid = getpid(); 83 res = getargs(&pi, sizeof(pi), args, sizeof(args)); 84 85 if (res < 0) 86 return UV_EINVAL; 87 88 return uv__search_path(args, buffer, size); 89} 90